Negative coverage: borrow_check_statement / break / premise drop_places(env, assumptions, state, locals_to_drop, places_live_on_exit) => state
Premise at line 260. Observed failure causes: failed_judgment.
break| Line | Coverage | Source |
|---|---|---|
| 258 | ✗ | (if state.scope_has_label(label)) |
| 259 | N/A | (let locals_to_drop = state.locals_dropped_to_label(label)) |
| 260 | 2 | (drop_places(env, assumptions, state, locals_to_drop, places_live_on_exit) => state) |
| 261 | N/A | (let state = state.with_break(label)) |
| 262 | N/A | (let state = state.diverges()) |
| ──────── ("break") | ||
| 264 | 17 | (borrow_check_statement(env, assumptions, state, Stmt::Break { label }, places_live_on_exit) => (env, state)) |
2 tests failed proving this premise:
Source location: tests/borrowck.rs:2645 (all coverage from this test)
fn foo() -> i32 {
exists<'r0, 'r1> {
let v2: &'r0 i32;
'a: {
let v1: i32 = 0_i32;
v2 = &'r1 v1;
break 'a;
}
return *v2;
}
}
Failed proof tree
check_all_crates failedmod.rs:42args
rule "check all prefixes"mod.rs:54check_crate failedmod.rs:61args
rule "check crate"mod.rs:74check_crate_item failedmod.rs:179rule "free fn"mod.rs:207check_free_fn failedfns.rs:14args
rule "check free fn"fns.rs:24check_fn failedfns.rs:31args
rule "check fn"fns.rs:54check_fn_body failedfns.rs:61args
rule "expr fn body"fns.rs:89borrow_check failednll.rs:124args
rule "borrow_check"nll.rs:135borrow_check_block failednll.rs:142rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "exists"nll.rs:302borrow_check_block failednll.rs:142args
rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "block"nll.rs:292borrow_check_block failednll.rs:142args
rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "break"nll.rs:260drop_places failednll.rs:840args
rule "drop_places"nll.rs:854access_permitted_by_loans failednll.rs:885args
rule "access_permitted_by_loans"nll.rs:898access_permitted_by_loan failednll.rs:905args
rule "borrow of disjoint places"nll.rs:920 (failed: if_false)rule "loan is dead"nll.rs:967loan_not_required_by_live_places failednll.rs:1296args
rule "loan_not_required_by_live_places"nll.rs:1321loan_not_required_by_live_place failednll.rs:1328args
rule "loan is not required by type"nll.rs:1348loan_not_required_by_parameter failednll.rs:1396args
rule "alias-ty RFC 1214"nll.rs:1432loan_not_required_by_parameters failednll.rs:1533args
rule "loan_not_required_by_parameters"nll.rs:1554loan_not_required_by_parameter failednll.rs:1396args
rule "rigid-ty"nll.rs:1416loan_not_required_by_parameters failednll.rs:1533args
rule "loan_not_required_by_parameters"nll.rs:1554loan_not_required_by_parameter failednll.rs:1396args
rule "lifetime"nll.rs:1506loan_cannot_outlive failednll.rs:1513args
rule "loan_cannot_outlive"nll.rs:1526 (failed: if_false)
rule "write-indirect"nll.rs:947 (failed: if_let)
Source location: tests/borrowck.rs:3100 (all coverage from this test)
fn foo() -> i32 {
exists<'r0, 'r1> {
let r: &'r0 i32;
'a: loop {
let x: i32 = 0_i32;
r = &'r1 x;
break 'a;
}
return *r;
}
}
Failed proof tree
check_all_crates failedmod.rs:42args
rule "check all prefixes"mod.rs:54check_crate failedmod.rs:61args
rule "check crate"mod.rs:74check_crate_item failedmod.rs:179rule "free fn"mod.rs:207check_free_fn failedfns.rs:14args
rule "check free fn"fns.rs:24check_fn failedfns.rs:31args
rule "check fn"fns.rs:54check_fn_body failedfns.rs:61args
rule "expr fn body"fns.rs:89borrow_check failednll.rs:124args
rule "borrow_check"nll.rs:135borrow_check_block failednll.rs:142rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "exists"nll.rs:302borrow_check_block failednll.rs:142args
rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "loop"nll.rs:249borrow_check_loop failednll.rs:640args
rule "fixed-point"nll.rs:660borrow_check_block failednll.rs:142args
rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "break"nll.rs:260drop_places failednll.rs:840args
rule "drop_places"nll.rs:854access_permitted_by_loans failednll.rs:885args
rule "access_permitted_by_loans"nll.rs:898access_permitted_by_loan failednll.rs:905args
rule "borrow of disjoint places"nll.rs:920 (failed: if_false)rule "loan is dead"nll.rs:967loan_not_required_by_live_places failednll.rs:1296args
rule "loan_not_required_by_live_places"nll.rs:1321loan_not_required_by_live_place failednll.rs:1328args
rule "loan is not required by type"nll.rs:1348loan_not_required_by_parameter failednll.rs:1396args
rule "alias-ty RFC 1214"nll.rs:1432loan_not_required_by_parameters failednll.rs:1533args
rule "loan_not_required_by_parameters"nll.rs:1554loan_not_required_by_parameter failednll.rs:1396args
rule "rigid-ty"nll.rs:1416loan_not_required_by_parameters failednll.rs:1533args
rule "loan_not_required_by_parameters"nll.rs:1554loan_not_required_by_parameter failednll.rs:1396args
rule "lifetime"nll.rs:1506loan_cannot_outlive failednll.rs:1513args
rule "loan_cannot_outlive"nll.rs:1526 (failed: if_false)
rule "write-indirect"nll.rs:947 (failed: if_let)
rule "loop"nll.rs:652borrow_check_block failednll.rs:142args
rule "basic block"nll.rs:157borrow_check_statement failednll.rs:174args
rule "break"nll.rs:260drop_places failednll.rs:840args
rule "drop_places"nll.rs:854access_permitted_by_loans failednll.rs:885args
rule "access_permitted_by_loans"nll.rs:898access_permitted_by_loan failednll.rs:905args
rule "borrow of disjoint places"nll.rs:920 (failed: if_false)rule "loan is dead"nll.rs:967loan_not_required_by_live_places failednll.rs:1296args
rule "loan_not_required_by_live_places"nll.rs:1321loan_not_required_by_live_place failednll.rs:1328args
rule "loan is not required by type"nll.rs:1348loan_not_required_by_parameter failednll.rs:1396args
rule "alias-ty RFC 1214"nll.rs:1432loan_not_required_by_parameters failednll.rs:1533args
rule "loan_not_required_by_parameters"nll.rs:1554loan_not_required_by_parameter failednll.rs:1396args
rule "rigid-ty"nll.rs:1416loan_not_required_by_parameters failednll.rs:1533args
rule "loan_not_required_by_parameters"nll.rs:1554loan_not_required_by_parameter failednll.rs:1396args
rule "lifetime"nll.rs:1506loan_cannot_outlive failednll.rs:1513args
rule "loan_cannot_outlive"nll.rs:1526 (failed: if_false)
rule "write-indirect"nll.rs:947 (failed: if_let)